GitHub does have some tools for finding references but often it still feels like a treasure hunt. For the same but easier to follow code, create a new Java Project for the SwerveBot example in your VSCode. You get the whole robot program at once and it’s easy to find references including referenced library classes.
If you hover over the second SwerveModule word in the line of code you show, the explanation shows immediately with the good Java doc explanation. Even if no Java doc had been provided, it’s still fairly easy to see the parameter list of the called method with nicely named variables.